@Rub3n213 Oh, I forgot to warn you. When you mod a prop's power outside of it's normal range, SP has a tendency to switch it back if you modify it or even move it. So you might have to save a prop as a assembly so you can replace a "faulty" one, or have it remodeled again later.
@Rub3n213 https://www.simpleplanes.com/a/0VjND2/5000-hp-260-inch-T2000-prop.
OK., but should I make a pair of 4733 hp, 360" blades for when you get to the Chinook?
Uh, twenty five 500 lb bombs would be 6.25 tons, not 12.5 kilotons. Since only about 40% on a bomb is explosive, you'd need something like 140450 five hundred pounds bombs to equal a 12.5 kiloton bomb.
P.S. Please build one with 140450 bombs, I'd love to see what that would do the the Beast!
@Rub3n213 So that's what you wanted 170'' blades for! Nice. It looks like the PBY, which is known as the Catalina, Canso, Cat, Black Cat, Mad Cat, Dumbo, MOP, Y-Boat, Pig Boat. If you want the speficics for it try: http://pbycatalina.com/specifications/
which has just about everything, right down to the 169" props.
@Loldererste That's because the forces that the plane is under change with speed, altitude and angle of bank. That fluttering is the first stages of the engines on the wingtips pulling ahead of the plane.
Great buggy! Say, would you like some custom rotators that only go one way? And I could set them up to do the transformation automatically with an AG button so you could free up VTOL for something else, say guns.
It's nice design. The reasons why it is a bit slow have to do with it's drag and power to weight ratio. In the desinger you can use the drag button to see whats producing drag and slowing it down. It's a bit thick and blocky. It you taper the design more and make it a little thinner, and lengthen the nose cone a little you can make it lighter and reduce the drag, both of which will make it faster.
@CrazyCatZe Yeah but let me be certain I understand what you want. You want a jet engine modified to 15lbf?
One point of confusion here is that 15lbf is very weak. in the United States we use a period (dot) as a decimal point instead of a comma. For example the weakest jet engine in the game, the Blasto J15 is rated at 3,370lbf. That's three thousand seventy pound feet of force-not three.
@OC3LOT1142 Sorry, I misunderstood your post. If you want inspiration for designs I suggest you do a web search for new, novel, experimental, futuristic and exotic aircraft. Maybe something will give you an idea. Some of the newer ideas have very unusual shapes that can prove challenging to try and match in SP.
@Rub3n213 Normally you can change stuff, but there is a gltich in the game that tends to switch power back into the normal range. I encounter in when working on the 100 hp challenge. Sp would sneak the settings back to 250 hp. Even for minor things like nudging the engine or reattaching it elsewhere. That's why I suggest setting up everything on the engine first. It's not hard to deal with, it's just annoying-especially since it doesn't advertise the change. Just suddenly the plane performs differently.
You could just start the build with a 2000HP 150" engine and get it modded -that's safest.
If it does change it you can always request someone to mod it back.
I'll build it foy you. How many blades do you need? But, you might want to post what you want to attach it to. One thing that SP does with props with power or blades set beyond normal parameters is to scale them back when they are moved, nudged or fiddled with in anyway. So just attaching a plane to one might drop the power down. It's better to attach the prop first and then leave it alone.
Sure, although you might be better goggling some basic aircraft stuff.
Basically, there are four forces that act on a plane that you have to deal with: Gravity, Lift, Drag and Thrust.
Gravity is the force that pulls you airplane down. The value of this force is called weight. The more weight on a plane the more it wants to come down to earth.
Next is Lift. Lift is the force that pushes a plane upwards. The more lift a plane has the more it wants to go up. A plane gets lift mostly from it's wings moving through the air. The bigger the wings and/or the faster it moves, the more lift. Now if a plane produces less lift than it's weight, it will go down (fall). If it produces more lift than it's weight it will rise (climb). I it produces exactly the same amount of lift as it's weight it will fly level.
Now the important bit here is that weight and lift counterbalance each other. You usually want to keep your center of lift (the blue CoL ball in the designer) behind your center of mass (weight, the red CoM ball in the designer). If Lift gets ahead of mass (weight) then the plane will be unstable and go out of control on liftoff. If lift is too far behind mass, then the plane gets nose heavy and wants to point down. If lift and mass are close then the plane might be very maneuverable, but unstable. Too close and the plane will be tail heavy and pitch up.
Now we move onto Drag. Drag is the force of air that the plane flies through. The bigger the airplane the greater the drag force against it. Rough blocky shapes, and bits that stick out, such as landing gear increase drag, as do bigger wings. Drag increases with speed too, and not in a linear fashion. . Drag can be reduced by streamlining a plane, smoothing it out, and retracting or hiding parts behind other sections. Drag is the enemy of and counteracted by Thrust.
Note that drag is like having someone tugging on a plane holding it back. If drag is distributed unevenly across a plane (too much on one side) then the section with more drag will move slower than the rest of the plane, causing it to turn to one side in a circle. Just how bad this will be depends on just uneven the drag is and how fast the plane is moving. What can be an irritating tendency at 100 MPH might mean a complete loss of control at 1000 MPH. So drag should be balanced out on both sides. This kinda holds true for top and bottom but it isn't usually a problem.
Thrust is the force that moves the plane forward.
Thrust is what
Your improving. This is a nice small jet. As for your sinking issue, the plane is actually rolling over on it's right side to rest upside down. That's because the center of weight is near to top side. It's actually the tail than is flipping it over.
@jamesPLANESii Clever idea. I tried it but detachers, bond deadweight all add to the empty weight.
@BaconEggs Adding all that fuel to a light aircraft increases the range too much. Unless there is a way to mod fuel weight.
It looks like I'm just going to have to add 1500 pounds of deadweight to get the gross weight on target.
Np. BTW, this might actually be faster with fewer engines (less mass to move), and with a more streamlined shape (lower drag). Something like a long tube or cone with the engines inline.
@jamesPLANESii
In the game, it lists two weights for an aircraft, Empty Weight and Loaded Weight. Realistically, empty weight is the weight of the aircraft, and loaded weight is the weight of the aircraft plus fuel, crew, passengers, luggage and cargo. So an airplane that has an empty weight of 4,000 pounds, but carries 2 people, their luggage and 100 gallons of fuel, might have a loaded weight of 5000 pounds.
In SP, fuel is one of the things that adds to loaded weight but not empty weight (in fact it seems to reduce empty weight, since they have to hollow out part of the wing or fuselage to make room for the fuel tank).
Dead Weight (which I did add to represent passengers) is considered part of the aircraft and increases the empty weight.
What I am trying to figure out is what can I add to a plane, other than fuel to increase it's loaded weight. If I were to add 1500 pounds worth of fuel (about 225 gal. in SP) instead of the 40-50 gal. of fuel the plane is supposed to have, I'll end up with around five times the range!
Oh ho! I didn't realize this was an actual plane. Looking at the drawings of the real Natter, the wings need to be moved back a bit and the horizontal stabilizers should be a bit wider (front to back). Both of those things would help with the stability.
@Lotusrocks Floats forward helps with the rolling tail over nose, but you need to lower the center of mass or it will just roll upside down. The heaviest part of the boat wants to be underwater.
Nah, it's just that I've been doing this a couple of months longer. If you take this design and play around with a bit-move wings, shift the poontoons, move weight around, you will learn a lot about what it takes to make a plane float correctly.
Okay, new version uploaded. I did more extensive work on it this time, but I tried to keep it from showing. It now has landing gear. Let me know if you want more help on this.
I did some work on it. I think it's a bit more stable. Let me know if it's good or if it needs more work. My next suggestion would be to hide some stabilizers inside the aircraft, so they won't show.
@emigdio2000 LOL! Who is? What's it doing? I've crashed it more than anyone else, so I might have a clue as to whatever problem it's giving you.
Good thing it's not electric, then it would be Assault & Battery.
+3Nice. BTW, What was your inspiration and what did you want to do with the engines? I'm asking because I'm working on something similar.
Very nice
@Rub3n213 Oh, I forgot to warn you. When you mod a prop's power outside of it's normal range, SP has a tendency to switch it back if you modify it or even move it. So you might have to save a prop as a assembly so you can replace a "faulty" one, or have it remodeled again later.
+1@Rub3n213 Okay done: http://www.simpleplanes.com/a/3kB885/Theee-5000-hp-Props.
+1@Rub3n213 Oops. Sorry, I'ts 4AM. So one with 260" and one with 270" and one with 280'.
@Rub3n213 Get a PC. SP is soooo much better on my PC compared to my tablets-especially when building stuff.
@Rub3n213 https://www.simpleplanes.com/a/0VjND2/5000-hp-260-inch-T2000-prop.
OK., but should I make a pair of 4733 hp, 360" blades for when you get to the Chinook?
@Rub3n213 What monster are you building now?
@ClarkSpernato Uh, it's still 6.5 tons, not kilotons. 1 kiloton= 1000 tons, and 1 (short) ton = 2000 pounds.
@ClarkSpernato Good Luck. If you pull it off I bet a plane will have to be careful not to get caught in the blast.
I'm trying to imagine how the inside is laid out. Considering it's height, it must be two floors and probably has a circular staircase.
Uh, twenty five 500 lb bombs would be 6.25 tons, not 12.5 kilotons. Since only about 40% on a bomb is explosive, you'd need something like 140450 five hundred pounds bombs to equal a 12.5 kiloton bomb.
P.S. Please build one with 140450 bombs, I'd love to see what that would do the the Beast!
Not a bad start. You did something tricky with side by side cockpits, too.
@AWESOMENESS360 That's what I thought when I loaded it up!
Oh, BTW, it can fly at 65K feet at 773 mph.
@Theplanelover77 Needs bacon
@Rub3n213 So that's what you wanted 170'' blades for! Nice. It looks like the PBY, which is known as the Catalina, Canso, Cat, Black Cat, Mad Cat, Dumbo, MOP, Y-Boat, Pig Boat. If you want the speficics for it try: http://pbycatalina.com/specifications/
which has just about everything, right down to the 169" props.
Your welcome. It really has a nice shape-like a microjet.
@Loldererste That's because the forces that the plane is under change with speed, altitude and angle of bank. That fluttering is the first stages of the engines on the wingtips pulling ahead of the plane.
Great buggy! Say, would you like some custom rotators that only go one way? And I could set them up to do the transformation automatically with an AG button so you could free up VTOL for something else, say guns.
Just n case you aren't aware of it, that "fluttering" is beginning of your plane tearing itself apart.
15lbf of thrust, okay. How much do you want the engine to weigh? I assume you must be building some sort of ultralight.
It's nice design. The reasons why it is a bit slow have to do with it's drag and power to weight ratio. In the desinger you can use the drag button to see whats producing drag and slowing it down. It's a bit thick and blocky. It you taper the design more and make it a little thinner, and lengthen the nose cone a little you can make it lighter and reduce the drag, both of which will make it faster.
+1@CrazyCatZe Yeah but let me be certain I understand what you want. You want a jet engine modified to 15lbf?
One point of confusion here is that 15lbf is very weak. in the United States we use a period (dot) as a decimal point instead of a comma. For example the weakest jet engine in the game, the Blasto J15 is rated at 3,370lbf. That's three thousand seventy pound feet of force-not three.
@Rub3n213 Two more props per request: https://www.simpleplanes.com/a/7wo902/3500-hp-and-4500-hp-T2000-engines
@OC3LOT1142 Sorry, I misunderstood your post. If you want inspiration for designs I suggest you do a web search for new, novel, experimental, futuristic and exotic aircraft. Maybe something will give you an idea. Some of the newer ideas have very unusual shapes that can prove challenging to try and match in SP.
@ACEPILOT109 Yeah, I though he was some newbie who is having trouble with his first builds.
@Rub3n213 Propeller is up: https://www.simpleplanes.com/a/d7qro2/2500-Prop-for-Rub3n213
Enjoy. I hope you post whatever it is you need it for.
@Rub3n213 Normally you can change stuff, but there is a gltich in the game that tends to switch power back into the normal range. I encounter in when working on the 100 hp challenge. Sp would sneak the settings back to 250 hp. Even for minor things like nudging the engine or reattaching it elsewhere. That's why I suggest setting up everything on the engine first. It's not hard to deal with, it's just annoying-especially since it doesn't advertise the change. Just suddenly the plane performs differently.
You could just start the build with a 2000HP 150" engine and get it modded -that's safest.
If it does change it you can always request someone to mod it back.
I'll build it foy you. How many blades do you need? But, you might want to post what you want to attach it to. One thing that SP does with props with power or blades set beyond normal parameters is to scale them back when they are moved, nudged or fiddled with in anyway. So just attaching a plane to one might drop the power down. It's better to attach the prop first and then leave it alone.
Sure, although you might be better goggling some basic aircraft stuff.
Basically, there are four forces that act on a plane that you have to deal with: Gravity, Lift, Drag and Thrust.
Gravity is the force that pulls you airplane down. The value of this force is called weight. The more weight on a plane the more it wants to come down to earth.
Next is Lift. Lift is the force that pushes a plane upwards. The more lift a plane has the more it wants to go up. A plane gets lift mostly from it's wings moving through the air. The bigger the wings and/or the faster it moves, the more lift. Now if a plane produces less lift than it's weight, it will go down (fall). If it produces more lift than it's weight it will rise (climb). I it produces exactly the same amount of lift as it's weight it will fly level.
Now the important bit here is that weight and lift counterbalance each other. You usually want to keep your center of lift (the blue CoL ball in the designer) behind your center of mass (weight, the red CoM ball in the designer). If Lift gets ahead of mass (weight) then the plane will be unstable and go out of control on liftoff. If lift is too far behind mass, then the plane gets nose heavy and wants to point down. If lift and mass are close then the plane might be very maneuverable, but unstable. Too close and the plane will be tail heavy and pitch up.
Now we move onto Drag. Drag is the force of air that the plane flies through. The bigger the airplane the greater the drag force against it. Rough blocky shapes, and bits that stick out, such as landing gear increase drag, as do bigger wings. Drag increases with speed too, and not in a linear fashion. . Drag can be reduced by streamlining a plane, smoothing it out, and retracting or hiding parts behind other sections. Drag is the enemy of and counteracted by Thrust.
Note that drag is like having someone tugging on a plane holding it back. If drag is distributed unevenly across a plane (too much on one side) then the section with more drag will move slower than the rest of the plane, causing it to turn to one side in a circle. Just how bad this will be depends on just uneven the drag is and how fast the plane is moving. What can be an irritating tendency at 100 MPH might mean a complete loss of control at 1000 MPH. So drag should be balanced out on both sides. This kinda holds true for top and bottom but it isn't usually a problem.
Thrust is the force that moves the plane forward.
+5Thrust is what
@bjac0 That was a bit out of line.
@BaconEggs Doesn't everything go well with fries?
@BaconEggs Haven't you ever had BBQ Kerbal?
@RailfanEthan "not ksp"
LOL!! I just need five Kerbals!
Your improving. This is a nice small jet. As for your sinking issue, the plane is actually rolling over on it's right side to rest upside down. That's because the center of weight is near to top side. It's actually the tail than is flipping it over.
@TheGuyYouMightKnow Thanks.
@jamesPLANESii Clever idea. I tried it but detachers, bond deadweight all add to the empty weight.
@BaconEggs Adding all that fuel to a light aircraft increases the range too much. Unless there is a way to mod fuel weight.
It looks like I'm just going to have to add 1500 pounds of deadweight to get the gross weight on target.
Np. BTW, this might actually be faster with fewer engines (less mass to move), and with a more streamlined shape (lower drag). Something like a long tube or cone with the engines inline.
@jamesPLANESii
In the game, it lists two weights for an aircraft, Empty Weight and Loaded Weight. Realistically, empty weight is the weight of the aircraft, and loaded weight is the weight of the aircraft plus fuel, crew, passengers, luggage and cargo. So an airplane that has an empty weight of 4,000 pounds, but carries 2 people, their luggage and 100 gallons of fuel, might have a loaded weight of 5000 pounds.
In SP, fuel is one of the things that adds to loaded weight but not empty weight (in fact it seems to reduce empty weight, since they have to hollow out part of the wing or fuselage to make room for the fuel tank).
Dead Weight (which I did add to represent passengers) is considered part of the aircraft and increases the empty weight.
What I am trying to figure out is what can I add to a plane, other than fuel to increase it's loaded weight. If I were to add 1500 pounds worth of fuel (about 225 gal. in SP) instead of the 40-50 gal. of fuel the plane is supposed to have, I'll end up with around five times the range!
I think you succeeded.
Oh ho! I didn't realize this was an actual plane. Looking at the drawings of the real Natter, the wings need to be moved back a bit and the horizontal stabilizers should be a bit wider (front to back). Both of those things would help with the stability.
Using the wheels for vertical stabilizers is clever.
Yeah, but his post said to "finish it". He can always take the gear off, and add another 50 gal. of fuel forward to balance it off.
@Lotusrocks Floats forward helps with the rolling tail over nose, but you need to lower the center of mass or it will just roll upside down. The heaviest part of the boat wants to be underwater.
Nah, it's just that I've been doing this a couple of months longer. If you take this design and play around with a bit-move wings, shift the poontoons, move weight around, you will learn a lot about what it takes to make a plane float correctly.
Okay, new version uploaded. I did more extensive work on it this time, but I tried to keep it from showing. It now has landing gear. Let me know if you want more help on this.
+1I did some work on it. I think it's a bit more stable. Let me know if it's good or if it needs more work. My next suggestion would be to hide some stabilizers inside the aircraft, so they won't show.
+1@aerodummy No problem. I just wanted to make sure that whatever I did was in the direction you intended.
+1